$181+ Cheap flights from Ontario to Billings (ONT - BIL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Billings with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Ontario to BillingsExplore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
Explore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/253:34 pm
ONT
- BIL
1 stop16h 36m
Multiple Airlines
Tue 6/302:03 pm
BIL
- ONT
2 stops26h 05m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Mon 6/85:20 am
BIL
- ONT
1 stop4h 30m
Delta
Deal found 5/11![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:50 am
ONT
- BIL
1 stop6h 49m
Delta
Tue 6/25:30 am
BIL
- ONT
1 stop4h 23m
Delta
Deal found 5/12![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
ONT
- BIL
1 stop4h 07m
Delta
Sat 8/86:34 pm
BIL
- ONT
1 stop4h 31m
Delta
Deal found 5/13![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:00 am
ONT
- BIL
1 stop3h 59m
Delta
Sun 7/265:20 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 5/15![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/242:14 pm
ONT
- BIL
1 stop8h 36m
Alaska Airlines
Wed 10/286:01 am
BIL
- ONT
1 stop8h 18m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:00 am
ONT
- BIL
1 stop7h 03m
Alaska Airlines
Sun 7/266:00 am
BIL
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- BIL
1 stop6h 21m
Alaska Airlines
Sat 6/66:00 am
BIL
- ONT
1 stop6h 10m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:35 pm
ONT
- BIL
2 stops20h 46m
Alaska Airlines
Mon 6/87:21 pm
BIL
- ONT
1 stop5h 37m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$436
This Expedia deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:06 pm
ONT
- BIL
1 stop5h 35m
Alaska Airlines
Tue 6/26:00 am
BIL
- ONT
2 stops14h 08m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:49 pm
ONT
- BIL
2 stops8h 02m
United Airlines
Wed 10/282:40 pm
BIL
- ONT
1 stop6h 40m
United Airlines
Deal found 5/12![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:55 pm
ONT
- BIL
1 stop3h 57m
Delta
Tue 5/2611:34 am
BIL
- ONT
1 stop5h 43m
Delta
Deal found 5/12![Delta logo]()
$450
Best flights from Ontario to BillingsDiscover carefully curated flight deals from Ontario to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
Discover carefully curated flight deals from Ontario to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Mon 6/85:20 am
BIL
- ONT
1 stop4h 30m
Delta
Deal found 5/11![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:23 am
ONT
- BIL
1 stop6h 41m
Alaska Airlines
Wed 10/286:01 am
BIL
- ONT
1 stop8h 18m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:49 pm
ONT
- BIL
2 stops8h 02m
United Airlines
Wed 10/282:40 pm
BIL
- ONT
1 stop6h 40m
United Airlines
Deal found 5/15![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:00 am
ONT
- BIL
1 stop4h 09m
Delta
Tue 7/145:20 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 5/11![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:00 am
ONT
- BIL
1 stop4h 07m
Delta
Sun 8/96:34 pm
BIL
- ONT
1 stop6h 00m
Delta
Deal found 5/13![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:35 pm
ONT
- BIL
2 stops20h 46m
Alaska Airlines
Mon 6/87:21 pm
BIL
- ONT
1 stop5h 37m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
ONT
- BIL
1 stop4h 07m
Delta
Sun 8/95:10 am
BIL
- ONT
1 stop4h 38m
Delta
Deal found 5/13![Delta logo]()
$361
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:21 pm
ONT
- BIL
1 stop4h 28m
Delta
Wed 7/16:40 pm
BIL
- ONT
1 stop6h 09m
Delta
Deal found 5/13![Delta logo]()
$475
Last-minute flights from Ontario to BillingsDiscover last-minute flight deals from Ontario to Billings. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Billings. Data last updated May 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:55 pm
ONT
- BIL
1 stop3h 57m
Delta
Tue 5/2611:34 am
BIL
- ONT
1 stop5h 43m
Delta
Deal found 5/12![Delta logo]()
$450
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:55 pm
ONT
- BIL
1 stop3h 57m
Delta
Mon 5/255:30 am
BIL
- ONT
1 stop4h 23m
Delta
Deal found 5/12![Delta logo]()
$471
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
ONT
- BIL
1 stop3h 54m
Delta
Tue 5/2611:34 am
BIL
- ONT
1 stop5h 43m
Delta
Deal found 5/12![Delta logo]()
$470
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:00 am
ONT
- BIL
1 stop3h 54m
Delta
Thu 5/285:30 am
BIL
- ONT
1 stop4h 23m
Delta
Deal found 5/11![Delta logo]()
$460
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:50 am
ONT
- BIL
1 stop6h 49m
Delta
Tue 6/25:30 am
BIL
- ONT
1 stop4h 23m
Delta
Deal found 5/12![Delta logo]()
$336
This Expedia deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:06 pm
ONT
- BIL
1 stop5h 35m
Alaska Airlines
Tue 6/26:00 am
BIL
- ONT
2 stops14h 08m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Mon 6/85:20 am
BIL
- ONT
1 stop4h 30m
Delta
Deal found 5/11![Delta logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- BIL
1 stop6h 21m
Alaska Airlines
Sat 6/66:00 am
BIL
- ONT
1 stop6h 10m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:35 pm
ONT
- BIL
2 stops20h 46m
Alaska Airlines
Mon 6/87:21 pm
BIL
- ONT
1 stop5h 37m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:21 pm
ONT
- BIL
1 stop4h 28m
Delta
Wed 7/16:40 pm
BIL
- ONT
1 stop6h 09m
Delta
Deal found 5/13![Delta logo]()
$475
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/253:34 pm
ONT
- BIL
1 stop16h 36m
Multiple Airlines
Tue 6/302:03 pm
BIL
- ONT
2 stops26h 05m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$282
One-way flights from Ontario to BillingsSearch for one-way flight options from Ontario to Billings. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from Ontario to Billings. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/264:03 pm
ONT
- BIL
1 stop6h 30m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$181
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:00 am
ONT
- BIL
1 stop7h 03m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$204
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:57 pm
ONT
- BIL
1 stop4h 55m
Delta
Deal found 5/15![Delta logo]()
$210
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/265:21 pm
ONT
- BIL
1 stop4h 28m
Delta
Deal found 5/16![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/215:00 am
ONT
- BIL
1 stop7h 22m
United Airlines
Deal found 5/13![United Airlines logo]()
$276
This Alaska Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/137:00 am
ONT
- BIL
1 stop7h 03m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$300
This flugladen.de deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:41 pm
ONT
- BIL
1 stop26h 52m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$312
This American Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/11:10 pm
ONT
- BIL
2 stops9h 05m
American Airlines
Deal found 5/15![American Airlines logo]()
$363
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:26 pm
ONT
- BIL
1 stop5h 25m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/129:20 pm
ONT
- BIL
1 stop20h 22m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$402
Find flight deals from Ontario to Billings
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Billings (BIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $282 (Kiwi.com) |
One-way from | $181 (Alaska Airlines) |
Popular in | March |
Cheapest in | November |
Average price | $475 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Billings that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 16, 2026.
Use the filters below to find and compare flights from Ontario to Billings that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Mon 6/1
4:57 pm-10:52 pm
1 stop4h 55m
Billings Logan Intl
Mon 6/8
5:20 am-8:50 am
1 stop4h 30m
$311
Quickest round-trip
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 7/7
6:00 am-11:09 am
1 stop4h 09m
Billings Logan Intl
Tue 7/14
5:20 am-8:47 am
1 stop4h 27m
$311
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Thu 8/6
6:00 am-11:07 am
1 stop4h 07m
Billings Logan Intl
Sun 8/9
6:34 pm-11:34 pm
1 stop6h 00m
$361
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 8/4
6:00 am-11:07 am
1 stop4h 07m
Billings Logan Intl
Sun 8/9
5:10 am-8:48 am
1 stop4h 38m
$361
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Sat 10/24
7:23 am-3:04 pm
1 stop6h 41m
Billings Logan Intl
Wed 10/28
6:01 am-1:19 pm
1 stop8h 18m
$369
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Mon 6/1
3:35 pm-1:21 pm
2 stops20h 46m
Billings Logan Intl
Mon 6/8
7:21 pm-11:58 pm
1 stop5h 37m
$436
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Sat 10/24
1:49 pm-10:51 pm
2 stops8h 02m
Billings Logan Intl
Wed 10/28
2:40 pm-8:20 pm
1 stop6h 40m
$444
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Fri 6/19
5:21 pm-10:49 pm
1 stop4h 28m
Billings Logan Intl
Wed 7/1
6:40 pm-11:49 pm
1 stop6h 09m
$475
Cheapest one-way
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 5/26
4:03 pm-11:33 pm
1 stop6h 30m
$181
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Mon 6/1
4:57 pm-10:52 pm
1 stop4h 55m
$210
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Ontario to Billings
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Billings in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Billings flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Billings flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Billings flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Billings
Have a flexible travel schedule? Discover the best time to fly to Billings from Ontario with our price prediction graph.
ONT-BIL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Billings
Reviews of airlines servicing Billings
Get insights into the airlines that provide service to Billings. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Billings. Reviews last updated May 16, 2026.
Read through reviews of airlines operating flights from Ontario to Billings, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from Ontario to Billings. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Other flights from Ontario
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Alternative routes for Ontario to Billings
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Other flights to Billings
Explore flights to Billings departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
Complete your trip
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Search flights from Ontario to Billings by cabin class
Find flights from Ontario to Billings, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Billings flights
Browse other Ontario and Billings flight options. Last updated on May 16, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Billings
Discover the top 3 airlines that operate flights from Ontario to Billings. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$260 | Average$364 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$269 | Average$504 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$270 | Average$501 | FlexibilityNo cancel fee | On-time69% |